I agree although it takes me time to get back in the zone so I like to block out all interruptions to flow (meetings, whiteboard sessions, etc.). Worst thing is

I agree although it takes me time to get back in the zone so I like to block out all interruptions to flow (meetings, whiteboard sessions, etc.). Worst thing is having a meeting every other hour since that just ruins a day for me. I can handle occasional slack messages since they require little concentration to punt. It's part of why I WFH a few days a week and schedule all my meetings early in the week.